Machine for pulverizing clay and extracting stone



(No Model.) 2 Sheets-Sheet 1.

J. W. SHAFPER;

MACHINE FOR PULVBRIZING CLAY AND EXTRAGTING STONES.

No. 401,862. I Patented Apr. 23, 1889.

WITNESSES: INVENTOH:

A T TORNE Y 8.

(No Model.) 2 Sheets-Sheet 2.

J. W. SHAFPER. MACHINE FOR PULVERIZING CLAY AND EXTRAGTING STONES.

No. 401,862. Patented Apr. 23, 1889.

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NiT STATES v JOHN IV. SI-IAFFER OF PHILADELPHIA, PENNSYLVANIA.

MACHINE FORPULVERIZING CLAY AND EXTRACTING STONE.

SPECIFICATION forming part of Letters Patent No. 401,862, dated April23, 1889.

Application filed September 25, 1888. Serial No. 286,324. (N molel.)

To all whom it may concern.-

Be it known that 1, JOHN W. SHAFFER, of Philadelphia, in the county ofPhiladelphia and State of Pennsylvania, have invented a new and ImprovedMachine for Disintegrating Clay and Extracting Stones, of which the"following is a full, clear, and exact description.

My invention relates to an improvement in machines for disintegratingclay and extract ing stones, and has for its object to provide a meanswhereby the clay will be separated into minute particles in anexpeditious manner, and wherein the stones will be extracted from theclay While being manipulated without becoming crushed; and a furtherobject of the invention is to provide a machine of simple and durableconstruction, and which may be conveniently operated.

The invention consists in the construction and combination of theseveral parts, as will be fully described hereinafter, and then pointedout in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar figures of reference indicatecorresponding parts in all the views.

Figure 1 is a longitudinal vertical section on line a; as of Fig. 2.Fig. 2 is a transverse vertical section taken on line 3/1] of Fig. 1.Fig. 3 is a side elevation of one of a series of disks constituting adrum or cylinder. Fig. 41 is a plan view of the same, and Fig. 5 is aperspective view of one of the teeth detached.

In carrying out the invention a box or casing, 10, having open ends, isbuilt beneath the floor 11 of a store-house or apartment in which theclay is usually kept. The said floor 11 is provided with an opening, 12,leading into the center of the box 10. The opening 12 is preferablyprovided with a grating, 13, the purpose of the grating being to preventlarge clogs of clay or large stones from passing downward into the box.

Transversely of the box 10, and beneath the opening 12 in the floor, acylinder, 14, is journaled, consisting of a series of disks, 15, one ofwhich is illustrated detached in Fig. Each disk 15 is provided upon oneface, near the periphery, with an annular groove, 16, and diametricalgrooves 17, ext-ending i11- ward from the periphery to an intersectionwith the said annular groove. The grooves 16 and 17 are adapted for thereception of a tooth, 18, illustrated in Fig. 5, which tooth is providedwith a T-head, 1f). shank of the tooth is made to enter thediainet-rical groove 17, and the head 19 that portion of the annulargroove 16 contiguous to the diametrical groove.

In building up the cylinder the several disks having teeth attached arepassed one after the other upon a spindle, 20, whereby the cylinder isjournaled, and the disks 15 are so located upon the cylinder that thesmooth side of the disk will be in contact with the grooved face of thenext disk. In the construction of the cylinder 14: four rows of spacedteeth are usually employed; but the number of rows may be increased ordecreased, as desired, and the distance the teeth project from thecylinder may be regulated as in practice will be found mostadvantageous.

Immediately above the cylinder 14 a grating, 20, is stationed, the barsof which grating extend longitudinally of the box or at a right anglewith the longitudinal axis of the cylinder, as best illustrated inFig. 1. The teeth-18 of the cylinder are adapted to pass The straight upbetween the several bars constituting the grating 20" and project adistance above the upper face of the same.

The grating 20" constitutes an integral portion of a plate, 21, the endsof which at the termination of the grating are made to incline or slantdownward, as best shown in Fig. 2. The outer ends of the plate 21 areprovided with an attached strip, 22, of greater length than the width ofthe said plate, and the proj ecting ends of the said strip 22 aresecured to the ends of the box 10 by a bolt, 23, a setscrew, or otherequivalent and readily-detached fastening device. It will be observed byreason of this construction that the plate 21, carrying the grate 20*,may be adjusted vertically to maintain at all times the same positionwith relation to the teeth 18.

Ator near the bottom of the box 10 two or more transverse drums, 2e, arepivoted, adapted to carry an endless apron, 25. The

apron 25 is purposed to carry awaythe disintegrated clay, and the drumscarrying the said apron revolve in a direction opposite to the directionof the toothed cylinder.

Vertical partitions 26 are provided at each end of the floor-opening 12,projecting downward in direction of the plate 21, a space, 27, beingmade to intervene the grating of the plate and the under edge of thesaid partitions. To the outer face of each of the partitions 26 a gate,28, is hinged, the lower end of which gate normally rests upon theinclined i urface of the plate 21, as best illustrated in Inoperation,when the clay is thrown through the opening 12, it is forcedto drop upon the grating 20, immediately beneath the said opening,whereupon, the cylinder 14 being rapidly revolved, the teeth of the saidcylinder plowing through the mass of clay thoroughly disintegrate thesame, and at the same time the said teeth throw any stones through oneof the openings 27 upon the inclined surface of the plate 21. Thedisintegrated clay, falling through the bars of the grating and from theteeth of the cylinder, is delivered to the -endless apron 25 and carriedby said apron to any suitable compartment for screening, and as thestones are successively thrown upon one side of the plate 21 the stonesin contact with the gate 28 will be forced outward down the inclinedsurface of the plate by the stones entering the opening 27. Two gatesare employed, one upon each side, in o der ha the cylinder 14 may berevolved in either direction.

The disks 15 of the cylinder may be secured upon the spindle bylock-nuts or other equivalent fastening device, and the said spindle 20and the drums 24: may be rotated in any approved manner.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a pulverizer, the combination, with a casing having an opening inits top and downwardly-projecting partitions 26 at each end of thecasing-opening, of a toothed cylinder journaled in the casing, anadjustable grating above the cylinder and having its ends at thetermination of the grating inclined downwardly, and gates hinged to thesaidpartitions and having their lower free ends resting on the inclinedends of the grating, substantially as described.

2. In a pulverizer, the combination, with a casing, 10, provided withthe grated opening 12 13 in its top and with the downwardly-proj ctingpartitions 26, of the grating 20 21, the gates 28, pivoted to thepartitions 26 and having their free ends resting on the said grating,the toothed cylinder 14, journaled in the casing below the grating, withits teeth projecting through said grating, and the apron below thecylinder, substantially as herein shown and described.

A pulverizing-cylinder consisting of the series of disks 15, eachprovided with the an-.

nular groove 16 and the radial grooves 17, and the teeth 18,havingT-shaped heads 19, substantially as herein shown and described.

JOHN W. SHAFFER. Witnesses:

HIRAM FARRINGTON, GEORGE E. BARNES.

